THE London Assembly has 25 members and meets at City Hall, where its job is to scrutinise the Mayor. The Mayor is not a member of the assembly but regularly appears in front of it to answer questions.
Fourteen of its members are elected to serve constituencies that typically stretch across two or three London boroughs, such as Enfield and Haringey or Hounslow, Kingston and Richmond.
The other 11 are chosen by their parties under a "top-up" system of proportional representation based on each party's support across London. They represent the whole of the capital. On May 1 voters will receive two separate ballot forms to elect their "constituency" and "top-up" members.

| Constituency | Party | |||
|---|---|---|---|---|
| Labour | Conservatives | Liberal Democrats | Green Party | |
| Barnet and Camden | ||||
| Bexley and Bromley | ||||
| Brent and Harrow | ||||
| City and East | ||||
| Croydon and Sutton | ||||
| Ealing and Hillingdon | ||||
| Enfield and Haringey | ||||
| Greenwich and Lewisham | ||||
| Havering and Redbridge | ||||
| Lambeth and Southwark | ||||
| Merton and Wandsworth | ||||
| North East (Islington, Hackney, Waltham Forest) | ||||
| South West (Hounslow, Richmond & Kingston) | ||||
| West Central (Hammersmith & Fulham, Kensington & Chelsea, Westminster) | ||||
| Labour | Conservatives | Liberal Democrats | Green Party |
|---|---|---|---|